Elements: Ability to switch of Face Recognition for some photos

It would be useful if I could somehow tag a photo that doesn't need face recognition.I go to a lot of carnivals, so could end up with a few hundred photos of people I don't know.It would save me a lot of time if I didn't have to tell Photoshop Elements not to tag these people.Of course I still want to tag my friends but that might just be 4 people rather than 1000 that Elements wants to recognize.